Einzeltreffer — DigiBib

The present invention relates to an information recording and reproduction apparatus which records the information on a disk by heating the disk with near-field light and causing magnetization reversal by applying a recording magnetic field to the disk. An optical waveguide 32, which introduces light beam emitted from a laser light source into a slider, and a plurality of electric wiring lines 31, which electrically connects the slider and a control unit to each other, are provided. A photoelectric composite wiring line 33 is provided in which the optical waveguide 32 and the plurality of electric wiring line 31 are integrally formed.

Titel:	INFORMATION RECORDING AND REPRODUCTION APPARATUS
Autor/in / Beteiligte Person:	Hirata, Masakazu ; Oumi, Manabu ; Suzuki, Mizuaki ; Park, Majung
Link:	Zum Volltext
Veröffentlichung:	2011
Medientyp:	Patent
Sonstiges:	Nachgewiesen in: USPTO Patent Applications Sprachen: English Document Number: 20110122738 Publication Date: May 26, 2011 Appl. No: 12/736992 Application Filed: May 19, 2009 Claim: 1. An information recording and reproduction apparatus comprising: a magnetic recording medium which rotates in a fixed direction; a light source which emits light beam in order to heat the magnetic recording medium; a pivot shaft disposed at the outside of the magnetic recording medium; a carriage formed so as to be rotatable around the pivot shaft; a slider which is supported at a distal side of the carriage so as to face a surface of the magnetic recording medium; a control unit that controls an operation of the slider; and a photoelectric composite wiring line in which an optical waveguide, which introduces light beam emitted from the light source into the slider, and a plurality of electric wiring lines, which electrically connects the slider and the control unit to each other, are integrally formed, wherein the slider has a spot light generating element which generates spot light from the light beam, and information is recorded on the magnetic recording medium by heating the magnetic recording medium with the spot light and causing magnetization reversal by applying a recording magnetic field to the magnetic recording medium. Claim: 2. The information recording and reproduction apparatus according to claim 1, wherein the optical waveguide has a core, which guides the light beam emitted from the light source in a total reflection condition, and a cladding, which is formed of a material with a refractive index lower than a refractive index of the core and which adheres to the core to seal the core, and the electric wiring lines are sealed with the cladding together with the core. Claim: 3. The information recording and reproduction apparatus according to claim 2, wherein the core is disposed in approximately the middle on a cross section perpendicular to an extending direction of the cladding, and the plurality of electric wiring lines is disposed so as to be symmetric with respect to the core. Claim: 4. The information recording and reproduction apparatus according to claim 2, wherein in the core, the lengths of horizontal and vertical widths of a cross-sectional shape perpendicular to an extending direction of the core are set to be different. Claim: 5. The information recording and reproduction apparatus according to claim 2, wherein a tunnel portion is formed in the cladding along an extending direction of the core. Claim: 6. The information recording and reproduction apparatus according to claim 2, wherein the optical waveguide has a stress applying portion for applying compressive stress in a direction perpendicular to an extending direction of the core. Claim: 7. The information recording and reproduction apparatus according to claim 6, wherein the stress applying portions are disposed so as to interpose both sides of the core. Claim: 8. The information recording and reproduction apparatus according to claim 6, wherein the stress applying portion is disposed on a surface of the cladding. Claim: 9. The information recording and reproduction apparatus according to claim 1, wherein the carriage includes a base portion, which is formed so as to be rotatable around the pivot shaft, and an arm portion, which is provided to extend from the base portion along a surface of the magnetic recording medium, and the light source is disposed in the base portion. Claim: 10. The information recording and reproduction apparatus according to claim 9, wherein a terminal substrate which electrically connects the control unit and the slider to each other is provided in the base portion, and the light source is disposed on the terminal substrate. Claim: 11. The information recording and reproduction apparatus according to claim 9, wherein a suspension which is formed so as to be flexibly deformable in a thickness direction is supported at a tip of the arm portion, a gimbal means for supporting the slider in a state rotatable around two axes, which are parallel to the surface of the magnetic recording medium and are perpendicular to each other, and a flexibly deformable support, which extends from the gimbal means toward abase end of the suspension along the top of the suspension, are provided in the suspension, and the photoelectric composite wiring line is disposed on the support. Claim: 12. The information recording and reproduction apparatus according to claim 11, wherein the photoelectric composite wiring line is disposed on the support with a base film, which has an insulation property, interposed. Current U.S. Class: 369/1/332 Current International Class: 11

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INFORMATION RECORDING AND REPRODUCTION APPARATUS